Fluid-brake.



P. BMINGHAUS.

FLUID BRAKE..

APPLIOATION FILED Ammo. 1907.

Patented July 13, 1909.

BEST AVAILABLE COP erica.

FLUID-BRAKE.

Specification of Letters Patent.

Patented July 13, 1909.

Application filed April 30, 1907. Serial No. 371,077.

To all yw/a'mtit Imay com-rnc le it known that I, Faaxz Bt'mnveirus, a subject of the Emperor of Germany, and a resident of Essen on -the- Ruhr, Germany,

i have invented certain new and useful Improvements in Fluid-Brakes, of which the lollowing is a specification.

The present invention relates to recoil guns with iuid brake and especially to the type in which a part ot the brake is adjustable from thevoutside for the purpose ot regulating the length of recoil.

The objectof the invention is to so connect the adjustable partot' the brake with the part of the gun supporting the same that the adjustable part can be easily and rapidly inserted and detached.

One embodiment of the invention is shown in the accompanying drawings, by the way ot' example.

Figure 1 shows those parts oi" the gun to which the invention relates, partly in sid/e view and partly in vertical longitudinal section; Figs. 2, 3 and i are. sections respectively on lilies *#2, iw-2 and ilfwl, Fig. l, looking from the left; Figs. 5 and t) are views corresjmnding to those shown in Figs. 2 and 4 but with the brake adjusted to another position.

The gun barrel A is mounted to slide on the track carrier B, the interiorv ot'v which contains the'hydraulic brake C l) and the recuperator spring E. Thebrake cylinder C'is rigidly secured-to the horn a oi the breech of the gun barrel, while they piston rod D is rotatably butV non-slidably mounted,

as will be hereinafter lfurther described, in the eapF which closes the carrier/B. The cap F is detachably mounted on the trackcarrier B in any suitable manner. brake piston consists as usual of a body ll rigidly secured to the piston rod D and a rotary disk J which are provided with passage ways t and i respectively. The rotary disk has a projection 2' (Figs. 2 and 5) which engages in a curved groove c (see in particular Fig. l) eut in the Wall of the brake cylinder C. j

In order to make it possible to adjust the piston rod D from the outsidea shaft K is provided which extends within the track carrier B and parallel to the piston rod and is journaled in bearings b on the track carrier. The shaft K is' positively connected to the piston rod by means ot a pair of inter- 4for the long recoil.

The

meshing tooth 'sectors M )i (Figs. l. and and is provided with an adjz-tsling lever l on that end ol the .shalt that is nearest the breech ol the gun barrel. 'the lever l pro jects through a slot in the carrier l) and carries a locking dog lu which is under the actioirof a spring [E (Figs and .3.) lhrough the medium o-l the locking dog the 4.adjusting lever l, and consequently also the sha tit li and the piston rod i), can be secured in two ditl'erent angular positions relatively to two notched segments Q. which are arranged on the carrier ll and which are provided with two notches o and fl Vtor the locking dog p.

A bayonet joint serves to connect the piston rod l) with the cap F in a manner similar to what is customary when non-rotatable piston rods are employed. This bayonet joint consists of two inwardly extending or sector-shaped tlaps f arranged diametrieally opposite one another in the cap F and two correspondiugly shaped projections g on a. head (i which is. rigidly secured on the piston rod I). 'l'he height oll the llaps f, measured in the radial direction is so selected thatthe llaps leave between them a tree opening corresponding to the eros.--;-section of the head 'l`he head (it is provided with a l'lange y: which, together with the projections y', prevents axial movementotl the piston rod l) relatively to the cap F.

When the parts assume the positions shown in Figs. l to i the brake is adjusted 'l`he locking dog p of the ladjusting lever l engages in the notches yl of the segments Q (Fig. :2) 5 the parts g ot' the bayonet joint; lie against each other' only at a portion of their width, measured in the tangential direction (Fig. ft) the passage ways i o the rotary disk J register con'rpletely with the passage ways /L ot' the piston body ll (Fig. i). liLl it isdesired to shorten the length ot' the recoil to about half of what it is in this position ofthe parts, the locking device p q is released and the adjusting lever l is swung in the direction of the arrow Z (Fig. 2) into'the position shown in Fig. 5 and the dog I/-is brought into engagen-ient with the notch 1j in the segments t2 (Fig. The turning of the adjusting lever l is partaken of by the shaft K and, through the medium of toothed sectors M N, by the piston rod I) which is turned in the direction of the arrow Y (Fig. 2) together loo esst AvAitABLE coi ywith its head G and the piston body H. rl`his has the result that, when the adjusting lever l has been shifted, the projections g otl the head Gr lie against the flaps f of the cap F along their entire width Fig. 6) and the passage ways z" become halt covered by the piston body H in the manner shown in l `i 5.

gas will be understood from the foregoing disclosure, the bayonet joint f g is so constructed and so arranged relatively to the members ll, J, of, serving to regulate the passage of fluid, that the parts of the bayonet joint engage each other to a greater extent when the brake is adjusted for short recoil (Figs. 5 and t5) than when it is adjusted for long recoil (Figs. l to 4). This is done because the resistance in the brake, and consequently the strain on the parts,`is greater when the recoil is short than when it is long.

lf it is desired to expose'the interior of the' carrier B the adjusting lever P is moved into abutmentA with the lower edge b" of the Slot of the carrier. 'l`he projections g of the head G of the piston rod are then conipletely out of engagement with the flaps and, after the connection between the cap F and the carrier has been detached, the cap can be drawn out from the piston rod. 1t will be understood without further explanation how the gun is further disassembled and again assembled. lfurtherniore it is unnecessary to state thereasons why the bayonet joiit makes it possible to easily and rapidly insert and remove the piston rod. 'l`he invention can also be used in the type ol guns in which not the piston rod but the brake cylinder or another part of the brake is adjustable from the outside l'or the purpose of adjusting the length of recoil; furthermore the invention can also be used in the type of guns in which any device is inserted between the mount and that part of the brake which is adjustable to regulate the length of recoil, the office of said device being to etl'ect an automatic adjust- .ment of the brake when the gun is elevated.

llaviiig thus described the invention, what is claimed as new and desired to besecured by Letters Patent is:

l. ln a recoil gun, the combination witha gun part, of a fluid brake having a piston rod, an interlocking connection between the piston rod and the gun part, and means eX- teiidiiig to the exterior of the gun for iinparting rotary adjustment to the piston rod to regulate the length of the recoil; said piston rod being adapted to be rotated by said adjusting means to aposition in which it is out of interlocking engagement with said gun part to permit ready separation of the parts.

2. ln a' recoil gun, the combination with a gun part, of a fluid brake having two relatively adjustable parts, an interlocking connection between said gun part and one of said brake parts permitting rotary movementy of thebrake part relatively to tl'ie gun part, and means extending to the exterior of the gun for imparti-ng rotary adjustment to said last-named brake part relatively to the gun part and the other brake part to regulate the length of the recoil and to vary the amount of engagement between said interlocking parts according to the length of the recoil.

3. In a recoil gun, the combination with the track carrier having a cap closing the carrier at one end, of` a fluid brake mounted in the carrier and comprising a cylinder, a piston, a member controlling the flow from one side of the piston to the other and a piston rod, an interlocking connection between the piston rod and the cap of the track carrier, and means extending to the exterior of the gun for imparting rotary adjust nient to said piston rod relatively to the cap and said member to regulate the length of the recoil, said piston iod being adapted to be rotated by said adjusting means to a position in which yit is out of intei-locking engagement with the cap to perniit ready separation of the parts.

4. In a recoil gun, the combination with a gun part, of a fluid brake having two relatively adjustable parts, an interlocking connection between said gun part and one of said brake arts permitting rotary movement 1of the lirake part relatively to the gun part, and n'ieaiis extending to the exterior of the guirfor iinpaitiiig rotary adjustment to Isaid last-iiained brake part relatively to the gun part\and the other brake part to revulate the length of the recoil, said adjustalile brake part being adapted to be rotated b said adjusting means to a position in which it is out of interlocking engagement with said -gun part to permit ready separation of the parts.

ln a recoil gun, the combination with a gun part, of a fluid brake having two relatively adjustable parts, a connection between one of the brake parts and the gun part comprising two interlocking and relatively adjustable parts, one carried by the gun part and the other by the brake part, means for imparting relative rotary adjustment to said brake parts to regulate the len th of the recoil and to vary the amount o engagement between said interlocking parts so as to bring the parts more in engagement for a short recoil than for a long recoil.

t3. ln a recoil gun, the combination with a gun part, of a fluid biake having a pair of relatively adjustable parts, a bayonet joint between one of said brake parts yand the gun part, and means for imparting relative rotary adjustment to said brake parts and to the members of the bayonet joint to regulate the length of the recoiljand to bring the lOt) eESTAvAILABLE ooe members of the bayonet joint more in engagement for a shorter recoil than for a longer recoil.

7. In a recoil gun, the combination with a gun part, of a fluid brake comprising a cylinder, a pisjfm having a piston rod, a member controlling theilow from one side of the piston to the oth'eS/a bayonet joint connec tion between the piston rod and the gun part, and means for simultaneously imparting relativerotary adjustment to the piston and controlling member and to the piston rod FRANZ 'BMINGHAUS In presence of- M. ENGELS, ALFRED POHLMEYER. 

